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Finding the Fourth Proportional to 308,469.10, 425,684.40 and 172,501.48

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Solution

The fourth proportional to 308,469.10, 425,684.40 and 172,501.48 is: 238,050.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,469.10 : 425,684.40 = 172,501.48 : x
  2. Step 2: Convert to fraction form
    308,469.10/425,684.40 = 172,501.48/x
  3. Step 3: Cross multiply
    308,469.10x = 425,684.40 × 172,501.48
  4. Step 4: Simplify right side
    308,469.10x = 73,431,189,012.91
  5. Step 5: Solve for x
    x = 73,431,189,012.91/308,469.10
  6. Step 6: Final answer
    x = 238,050.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.